I found a filling recipe on the internet and took a few shortcuts - like using a box cake mix - since I just came up with this on a whim. I was pretty happy with it but would make a few slight changes if I made it in the future (I'll list them in the steps)
I ended up taking my finished cake to work and it was a big hit.
Step 1: Gather ingredients and supplies
- 3 identical 8-9" pie pans. I only have two and didn't feel like baking in two batches, so I bought a 3 pack of 8.5" pans for $2
- an oven-safe ceramic bowl 3-4" in diameter - I used a great little ceramic ikea bowl
- a cookie sheet
- a ziplock bag
- 1 box cake mix - I used duncan hines dark chocolate fudge cake because it was the closest match to the original
- eggs, oil, & water to mix cake (how much you need of each depends on the mix you use)
- marshmallow fluff
- unsalted butter
- powdered sugar
- semisweet chocolate chips
Step 2: Make batter and prepare pans
Lay out your three pans and lightly coat them with butter or butter spray.
Take your bowl and butter the outside, then place it in the center of one of the pans
Step 3: Pour the batter
I recommend putting the pan with the ring on a cookie sheet so that the bowl won't move around in transit.
Step 4: Bake cakes
Check it with a piece of dry pasta - if it comes out dry, the cake is done, if it has batter on it, it needs more time. My ring cake took about 20 minutes, and the other two took about 30.
Let the cakes cool while you make the filling
Step 5: Make filling
6 tablespoons unsalted butter, softened
1 1/2 cups confectioners' sugar
3/4 cup Marshmallow Fluff
1 1/2 tablespoons heavy cream
*But, I would use less powdered sugar next time, or maybe use regular butter, because this was sickeningly sweet (which, don't get me wrong, some people liked, but it was too sweet for even my sweet tooth)
Mix everything together at medium speed until it is smooth. I recommend mixing the butter and fluff together and then adding the sugar in as it mixes because it will blend easier.
If it isn't blending thoroughly, ditch the mixer and use a fork to smoosh it together
Put atwo spoonfulls aside in a zip lock bag.
Step 6: Construct the cake
Use a knife to trace around the bowl and lift it out, leaving you with a ring of cake. Then, carefully flip it over on top of the first layer. Now you will basically have a bowl made out of cake. Fill the hole with the filling and smooth it out.
Top it off with the last full cake.
Finally, use a knife to trim around the edges to make them smooth
Step 7: Make the icing
Next time, I will use a thin layer of a normal solid icing so it will be easier to coat the sides.
But here's the basic melted chocolate that I did for this cake:
1/2 cup heavy cream
1 cup semisweet chocolate, finely chopped
2 tablespoons unsalted butter, softened
- Heat the cream in a small pan until steaming.
- Add the chocolate and stir until melted
- Remove from the heat, add the butter, and stir until smooth.
- Let stand for a few minutes before pouring
Step 8: Ice the cake
Next, take the filling that you reserved and put it in a piping bag if you have one. If you don't (I didn't), put it in a ziplock bag, make a little cut in the bottom corner, and squeeze it down.
Then, make white swirls on top and let them set.
I don't have that steady of a hand and my DIY piping bag made thicker swirlies than I wanted, so I will use a real piping bag with a proper tip if I make this for a party.